Many gun-saves-day goes unreported.
I was getting a pizza about 12 years back. Two dudes, early 20s, pulled up in a Caprice and blocked me in. Both jumped out and beelined for me, sizing up my situation, preparing to rob my ass, it was pretty obvious. I had gun in hand (watched their car roll in, not focused on stores, focused on blocking in me with plenty of parking there. I shook my head and mouthed "no motherfccker" and kept glock pointed down yet apparent. They froze in their path. They spoke to one another. They walked backwards to their car, got in, peeled out.
They weren't there for pizza. They blocked me in, got out looking shady as fck, stpped toward me, froze, retreated and sped out. Only reasonable assumption was that my ass was about to get robbed. Wifey with me never saw a thing, bless her slipping ass.
NOW - If I were to call police - and say 2 shady dudes made a move, and I pulled yet didn't point my weapon - they'd likely fck with me. I was supposed to wait until they put a 38 in my grill to make a move, I guess. So that instance went unreported. I reckon many similar things happen and the gunowner just wants to get home.